Apparatus for the transmission of power.



R. J. PRY.

APPARATUS POR THE TRANSMISSION OP POWER.

APPLICATION FILED AUG. 7, 1907.

Patented Apr. 13, 1909.

rHs Nomars PETERS co., WASH/awww, v. c.

UNITED STATES TATENT ERICE.

APPARATUS FOR TI-IE TRANSMISSION 0F POWER.

Speccaton oi Letters Patent.

Patented April 13, 190e.

Application led August 7, 1907. Serial No. 387,475,

To all whom it may concern:

Be it known that I, RICHARD Jol-1N Fier, a subject of the King of Great Britain and Ireland, residing at Barkly street, Brunswick, near Melbourne, in the State of Victoria, Commonwealth of Australia, have invented certain new and useful Improvements in Apparatus for the Transmission of Power, of which the following is a specification.

This invention provides an improved apparatus for the transmission of manual and other power, which apparatus, although simple and comparatively inexpensive to manufacture, will be very effective for use with cranes, grubbing machines, for lifting weights, for locomotion or propulsion of vehicles, and for a number of other purposes in which a continuous transmission of power applied is desired. Y

The apparatus consists of two or more) wheels constructed preferably of metal and secured at their centers at a suitable distance apart to a winding drum, and each wheel having peripheral teeth thereby forming a double endless ratchet. The winding drum, which acts as the aXle, may protrude through either or both of the ratchet wheels, but ordinarily it projects sufficiently7 through both to enable a bridle and suitable anchorino` or retaining gear to be conveniently7 aflIXed thereto. An upwardly curved standard having a foot-piece extends from the anchor plate-to which it is connected by convenient means as bolts passing through its foot-piece-to a point intermediate the two ratchet wheels, and it provides means for the pivoting of the operating lever. The standard to which the lever is pivotally fastened has sufficient spring to allow of a slight vertical action in addition to a right and left motion of the lever, while the torsional strain on this standard retains the lever rmly in operative position and in cngagement with the ratchet teeth. The operating lever is constructed with two jaws adapted to engage with the teeth of the ratchet wheels, engaging one wheel with the forward motion and the other wheel with the backward motion, or alternately upward and downward.

In the accompanying drawings there is illustrated a machine constructed according to my invention and employed for extincting trees and stumps from the ground.

ings in order that the invention, its mode of operation, as well as its applicability to analogous uses will be clearly understood.

Figure l is a side elevation of the machine, and showing the operating lever in vertical section. Fig. 2 is a plan, and Fig. 3 a front elevation of the parts illustrated in Fig. l.

In these views 1 1 designates wheels, which are constructed of suitable material as metal, secured at their centers at a desired distance apart to a windingdrum or axle 2. Each of these wheels l has peripheral teeth 3, thereby forming a double endless ratchet in which the teeth of one wheel are positioned in advance of the corresponding teeth of the other wheel, that is to say the radial face of a tooth of one wheel is opposite to and corresponds in position with the space between two teeth of the other wheel. The winding drum or axle 2 passes sutliciently through the centers of each of the wheels l to enable a bridle 4: to be conveniently axed thereto.

5 is a flat anchor plate atlixed to the bridle 4 by means such as the bolts 6, and this plate 5 serves to give the bridle the weight necessary in a machine of this description, and in addition it enables the gear designed for the operating lever pivot or fulcrum to be suitably attached.

7 is an upwardly curved standard having therein a twist 8 and affixed to the anchorplate by means of bolts 9 or the lilre passing through its foot-piece 8a. The standard 7 extends from the anchor-plate to a point intermediate the two ratchet wheels l, and it has its rear end furnished with a recess IO into which the operating lever l2 movably fits. This lever has a hole drilled therein which a vertical pin Il is designed to drop and pass through the recessed end of the standard or lever support 7. By this means a simple though effective pivot or fulcrum for the lever 12 is formed, and the torsional strain of the standard 7 caused by the twist 8 therein tends to exert sutlicient downward pressure on the lever I2 to retain it in an operating position, while allowing a slight vertical action in addition to a free right and left motion of the lever. This lever 12 is constructed with two Yjaws or bearing faces I3, each of which engages with the teeth of a ratchet wheel l on the forward or rearward movement of the op- Reference will now be made to these drawi erating lever 12. The vertical pin l1 which IIO forms the 'lever pivot isf furnished with a ring 1d for the purpose of enabling it to be removed without difficulty, whenever required.

15 represents a framing or stand-one provided on each sides-devised to support the ratchet wheels 1, when the machine is positioned ready for operation (as illustrated in F ig. 1), suihciently above the ground to allow of the unhindered rotation of the wheels and the winding drum 2 when operated by the lever 12. INhen, however, this anchor-plate 5 has been raised in order that the machine may be moved from place to place, the stands or framings 15 are lifted above the ground and the machine is free to travel on its toothed .revoluble wheels V1.

The numeral 17 indicates that any chain, rope or the like can be conveniently affixed to the forward end of the anchor-plate 5 having an aperture 16 for the purpose of drawing the machine, for example from one stump to another.

In operation one end of the hauling rope or chain 18 is an'ixed to the winding drum or axle 2, While its other end is connected to the stump, tree or other object to be extracted or moved. By operating the pivoted lever '12 forwardly and backwardly, one of the vjaws 13 engages with the teeth 3 of one of the ratchet wheels 1 on the forward travel, while the other j aw 13 engages with the 'teeth of its corresponding ratchet on th-e rearward movement of the lever. By this means a continuous forward motion is given to the winding dium without any pawls, dogs or other holding means being required as the jaws 13 vof the lever are firmly retained in engagement with the faces of the teeth 3 by the spring and torsional strain of the upwardly curved standard or support 7 to which the lever is pivoted. The spring in 'this support is such that it enables a slight vertical movement of the lever 1.2 required, to work the machine, in addition to the usual approximately horizontal motion, and for the purpose of releasing the strain on the hauling rope 1S if at any time desired, the machine is simply worked backwardly. It will be readily understood that the lever 12 can be so constructed that leverage may be exerted from either or both sides ofthe machine. Power may also be applied b y the provision of cog wheels or endless chain gearing according to the class of work engaged in. For applying the power to wheels a chain-wheel of desired diameter and pitch can be aflixed to one of the ratchet wheels 1 for the operation of an endless chain gearing.

In practice the ratchet wheels 1 may be constructed with keyways, and be secured to the wind-ing drum by tapered keys for the purpose of enabling the distance apart of the two ratchet wheels to be readily and con` ve'niently adjusted. In this case, the pivoted operating lever 12 would be furnished withv This and sundry modifications, however, asV well as variations in the details can ybe Emade within the scope of the invention. Y

llVhat I claim as new and desire to secure by Letters Patent of the United States .is

1., In apparatus of the class indicated, the combination of revoluble wheels having peripheral teeth and secured centrallyV to an axle or winding drum, a pivoted operating lever having aws adapted t-o engage with the teeth of said wheels, and a standard to which said lever is pivoted and retained in engagement with said teeth by the torsional strain of such standard, substantially as vand for the purposes set forth.

2. In apparatus of the Kclass indicated, the combination of two ratchet wheels secured at their centers Vto an axle or winding drum', 'an

voperating lever pivoted intermediate the ratchet wheels and constructed with a plurality of jaws adapted to engage with the ratchet teeth, a bridle attached to the axle 'or winding drum, and an anchor-plate atiixed to said bridle, substantially as and for the purposes set forth.

3. In apparatus of the class indicated., the combination of two ratchet wheels 1 secured at their centers to an axle or winding drum 2, an operating lever 12 pivoted intermediate the ratchet wheels and constructed with a plurality of jaws 13, and a standard or support T the torsional strain of which retains said lever 12 in engagement with the ratchet teeth, substantially as described and illustrated and for the purposes set fort-h.

4L. In apparatus of the class indicated, the combination of two ratchet wheels 1 secured at their centers at convenient distances apart to an axle or winding drum 2, -a pivoted operating lever 12 adapted to Vengage with the teeth of one ratchet wheel on the forward motion and the teeth of the other on the rearward travel, va bridle as 4, anchor-plate as '5, and framings Vor stands as 15, substantially as described and for the purposes set forth.

5. In apparatus of the class indicated, the combination with two ratchet wheels secured at their centers to a winding drum, of an upwardly curved spring standard or support T having a foot-'piece 8, and a recess 10 formed in one end thereof, an operating .lever 12, which has a plurality of jaws or bearing faces 13, adapted to engage with the teeth of the ratchet wheels in the man-Y operating position by the torsional .strainfof said standard 7, substantially as described and illustrated and for the purposes set forth.

6. In an appratus of the character deo scribed, the combination with a revoluhle wheel having peripheral teeth and secured centrally to an axle, of a pivoted operating lever having a jaw adapted to engage with the teeth of the ratchet Wheel, and a stand- 10 ard to which said lever is pivoted and retained in engagement With said teeth by the torsional strain of such standard.

In Witness whereof I have signed this specieation in the presence of two Witnesses.

RICHARD JOI-IN FRY.

Witnesses:

A. J. CALLINAN, M. CALLINAN. 

